Veits, Yu. A.; Neganova, E. G.; Borisenko, A. A.; Foss, V. L.; Lutsenko, I. F.
Journal of General Chemistry USSR (English Translation), 1989 , vol. 59, p. 1817 - 1829
Zhurnal Obshchei Khimii, 1989 , vol. 59, p. 2025 - 2039

Mikhailov, B. M.; Dorokhov, V. A.; Yakovlev, I. P.
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1966 , p. 298 - 300
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1966 , p. 332 - 334

Vetter,H.-J.
Z. Naturforsch., B: Anorg. Chem., Org. Chem., Biochem., Biophys.,, 1964 , vol. 19, p. 72 - 73

Vetter, H. J.
Zeitschrift fuer Naturforschung, 1964 , vol. 19b, p. 72 - 73